-ing bbbb bbin bbng bbrg bgon bibb bibi bibo bigb bigg bign bigo biin bin- bing bini binn bino bio- biog bioi bion birb birg biri birn biro birr bnib bnin bnor bnrr bobb bobi bobo bogg bogi bogo boi- boii boin bong boni bonn bono boob boog boon boor bor- borg bori born boro borr brig brin brio brno brob brog bron broo bror brrr gbbo gbon gggg ggrn gibb gigg gigi gign gigo ging gini ginn gino giog gioi gion girg giri girn giro girr gnib gnin gnoo gnrr gobi gobo gogi gogo goin gon- gong goni gonn gono goog gooi goon goor gorb gorg gori gorn goro gorr grbr grib grig grin grni grob grog groi gron groo gror grrr i-go i-no ibon ibri ibro igbo igni igno igon igoo igor igri iiii iiio iino iioi iioo inbo ingo inig inni inno innr ino- inoi inon inor inri inro iobi ioii ioio ioni ionn iono iooi iooo iorg iori iri- irig irin irio irob iron irri n-ii nbbo ngio ngon ngor ngri nibi nibo nigg nigo niir ning nini nino niog nion nioo niro nngn nnnn nobi nobo nogg nogo noib noin noio noir non- nong noni nonn nono noo- noob noon nooo noor nor- norb norg nori norn noro norr nron obbo obin oboi obon obor obri obro ogb oggi ogin ogni ogog ogoi ogon ogri ogro oigo oiii oion ongi ongo onir onni onno onon onor oobi oooo orbb orbi orbo orgn orgo ori- orig orin orio orni orno oro- oron oror orri orro rbbb rbbr rgbi rib- ribo rigg rigi rigo riin ring rinn rino rion riri rnbr rnin rob- robb robi robo rogg rogi rogo roig roin roio roir rong roni rono roob roog rooi roon roor rori roro rrrr